密度锁内分层传热特性的初步探讨

通过可视化观察方法,对3种不同实验管内的流体分层传热特性进行实验研究,同时,建立传热计算模型,对密度锁内的传热机理进行分析.结果表明:密度锁内的分层工质自上而下分为:混合层、界面层、导热层.混合层内的传热以对流为主,其余两部分的传热以导热为主.对不同管径的研究表明,密度锁内的蜂窝通道能有效地抑制扰动作用,减小混合层的厚度,降低通过密度锁的热量传递.

Preliminary Study on Heat Transfer Characteristics of Stratified Fluid in Density Lock

By the method of visible observation,experimental study on heat transfer characteristics of stratified fluid is made in three different pipes,at the same time,computational model on heat transfer is built,and mechanism of heat transfer in density lock is analyzed.The results show that the work fluid can be di-vided into three zones from top to bottom: mixing layer,interface layer,and conduct layer.In mixing layer heat is mainly transported by convection,and transported by conduct in interface layer and conduct layer.In addition,the result of study on different pipes indicates that the honey comb channel in density lock can effi-ciently curb the disturbance,lessen the thickness of mixing layer and decrease the heat transfer through den-sity lock.